Gustav ebkenzweig



(No Mod el.)

- G'- ERKENZWEIG.

V ROLLING MILL. 7 N0. 281,475. Patented July 17, 1883.

N PETERS. Phcb-Uthugnphar. wahingtm uu UNITED "STATES PATENT OFFICE.

GUSTAV ERKENZWEIG, OF HAGEN, PRUSSIA, GERMANY.

ROLLING-M I LL.

SPECIFICATION forming part of Letters Patent No. 281,475, dated July 17, 1883.

Application filed December 29, 1882. (N0 model.) I Patented in Germany June 12, 1881, No. 17,422, and in England December 22, 1881, No. 5,611.

To all wlwm, it may concern:

Be it known that I, GUSTAV ERKENZWEIG, of Hagen, Kingdom of Prussia, German Empire, have invented new and useful Improvements in Rolling-Mills, (for which I have obtained Letters Patent in Germany J une 12, 1881, and in Great Britain December, 22, 1881,) of which the following is a-specification.

My invention relates to rolling-mills used for the purpose of rolling thin rods of iron, steel, or other metal, in which pairs of rollers, both horizontal and vertical, are used 5 and it has for its objects novel methods of constructing such rolling-mills, and of mounting and driving the vertical rolls, so that the latter, which automatically receive the metal which has been first rolled between horizontal rolls, are capable of being quickly and easily moved horizontally through a distance equal to the length of the horizontal rolls, and of being adjusted and fixed in any required position in front of the latter, while they are also capable of adjustment vertically through a distance equal to their own length, any part of which can therefore be brought opposite to the horizontal rolls.

The accompanying drawings are illustrations of the invention, Figure 1 being a plan of the improved rollingmill; Fig. 2, a front view of the vertical rolls; and Fig. 3, a side elevation of the latter, together with a sectional end view of the horizontal rolls.

The same letters of reference indicate the same parts in the several figures.

a a are two horizontal frames firmly connected together by four intermediate pieces or stays, b, bolted between them, so that these frames, which carry the vertical rolls, constitute a solid piece of machinery, which is capable of being raised or lowered, as desired, in the vertical frame 0. The bearings of the vertical rolls are adjusted in the horizontal frames a a in'the usual well-understood way. The vertical frame 0, containing the frames a a and the vertical rolls, is capable of moving horizontally in the foundation-plate i for a distance equal to the length of the horizontal rolls, and is also of sufficient height to allow the vertical rolls to be raised or lowered in it through a distance equal to their own length. The raising or lowering in this manner of the frames I a a and the vertical rolls is eflected by means of a screw or screws, d,- and they are fixed in any desired position by means of screws 6, and by keys on the opposite side of the frames a a. Driving-spindles f f are connected to the vertical rolls by couplings, and are provided with keyways or grooves, in which are fitted keys, in the toothed wheels 9 y and the beveled toothed wheel h, the latter being firmly con nected to the toothed wheel g. The wheel h gears with and is driven by the beveledtoothed wheel h upon a shaft revolving in bearings, as shown, and driven by the pulley k.

By the method of construction and arrange- .ment described, it is possible to bring every part or groove of the vertical rolls opposite to every part or groove of the horizontal rolls.

, It is important that the velocity of the verti cal rolls should correspond properly with that of the metal to be rolled after it has left the horizontal rolls; and in order to prevent upsetting and jamming of the metal in the guides, the velocity of the rolls is made to exceed slightly that of the metal entering them, whereas to prevent such increased velocity from injuring and tearing the metal, motion is imparted to the wertical rolls by means of a belt so arranged that it will slip on the pulleys when the strain upon the metal becomes too great. For this purpose the belt conveying motion from the driving-pulley m or m to the aforesaid pulley k is made of such length as to be loose on the pulleys, while it is drawn tight by means of a tension-pulley, Z, Figs. 2 and 3, pressed against it by a spring, or a lever and weight, Z. This arrangement allows the pressure of the pulley Z against the belt to be so regulated as to impart to the latter the tension required.

Considering that the vertical rolls on the opposite sides of the train or line of horizontal rolls must rotate in different directions, it is ad vantageous to use two driving-shafts, p and q,

also turning in different directions, motion from 5 one of thembeing'conveyed to the vertical rolls on one side of the horizontal rolls, while motion from the other one is imparted to the corresponding rolls on the opposite side of the latter. These two shafts may be driven by the same motor which actuates the horizontal rolls, or by a separate motive power.

} The pulleys m and m have either such length that the vertical rolls may, without disturbing the transmission of motion, be adjusted, as already described, opposite to any part of the length of the horizontal ones; or the pulleys are made movable on the shaft, so that they may be shifted to their proper position when the vertical rolls have been adjusted.

The horizontal rolls are ordinarily arranged in a continuous train driven from one end. In this case the speed of all the pairs of rolls eonstituting the same is alike. The consequence hereof is that the metal, while proceeding from one pair of vertical rolls to the next pair of horizontal rolls, forms more or less extensive bends or bows. In order to avoid the formation of such bows of inconvenient size, and at the same time to cause an acceleration of the rolling process, in addition to the increase of speed of operation obtained by the vertical rolls, it is advantageous to drive each one of several pairs of horizontal rolls at the delivering or rear end of the train separately by means of a belt in a similar manner as the vertical rolls, but without a tension-pulley. This permits of imparting to each of such pairs any speed that may be considered suitable. By

preference, the speed of any horizontal pair thus driven is made equal to that of the preceding vertical pair. The annexed Figs. 4 and 5 show in a side and in an end view an arrange ment of this kind, in which the horizontal rolls are driven alternately from either of the two lines of shafting p and q. (In order to allow both of these lines to be shown in Fig. 4, they are supposed to have been placed at somewhat different heights.)

m m are the driving-pulleys for the vertical rolls; n n, those for the horizontal rolls. From one horizontal roller to the other motion is conveyed by the spur-wheels r.

I claim as my invention The combination, with a pair of horizontal rolls, of a pair of vertical rolls which are adjustable up and down for their own length, and horizontally through a space equal to the length of the horizontal rolls, substantially as and for the purpose described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

GUSTAV ERKENZVVEIG.

\Vitnesses:

EDUA'RD KNEIREL, MATHIAs BREDT. 

